Here is a Film Plot :
Set in Fresno, California, Unfriended is told through a laptop screencast of high school student Blaire Lily (Shelley Hennig), one year after her childhood friend Laura Barns (Heather Sossaman), a victim of cyberbullying, had committed suicide after an embarrassing video of her was uploaded to YouTube. Blaire is contacted over Skype by her boyfriend Mitch Roussel (Moses Jacob Storm) and later joined by three of their friends: Jess Felton (Renee Olstead), Ken Smith (Jacob Wysocki), and Adam Sewell (Will Peltz), as well as a faceless account named "billie227", who claims to be Laura.
When a humiliating video of Fresno, California high school student Laura Barns (Heather Sossaman) is uploaded to YouTube, causing her to endure widespread mockery and ridicule, she promptly commits suicide.
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The group make several unsuccessful attempts to get rid of the user. Later they suspect that another girl, Val Rommel (Courtney Halverson), whom they all despise, is pranking them. When she is invited to the chat, Jess's Facebook is suddenly updated with photos of Val drinking and smoking at a party. Jess, who proclaims her innocence, attempts to delete the photos, but they continue to reappear. After finally deleting them, the photos are mysteriously posted by Adam's account. After being threatened multiple times by Laura, Val eventually calls 911 to report online abuse and signs off.
A year later, her closest friend, Blaire Lily (Shelley Hennig), views a LiveLeak video of Laura's suicide - where she is seen pointing a gun to her head and shooting herself, despite nearby students begging her to stop. Blaire is then contacted over Skype by her boyfriend Mitch Roussel (Moses Jacob Storm). Both are joined by their classmates Jess Felton (Renee Olstead), Ken Smith (Jacob Wysocki), and Adam Sewell (Will Peltz). During their conversation, however, they notice a random user dubbed "billie227" in their chat, who was not invited in by any of the participants.
After finding out that the user's account is Laura's, Blaire gets an email from her which includes a link to the Instagram website, showing a photo of a message Laura sent Val a year earlier, begging her to remove the embarrassing video. Val cruelly rejected the plea and told her to kill herself. When multiple Instagram users criticize Val, she is suddenly brought back into the chat. Val is seen silently standing motionless in her bathroom, next to an open bottle of bleach. Concerned, when Blaire calls Val to check on her, Val's phone is seen vibrating across her counter. Suddenly, her laptop is abruptly knocked to the ground. The police arrive and shout out police codes. The group try to work out what happened to Val using those codes, and her death is eventually labeled a suicide. Though it is not explicitly stated, it is implied that Val was forced to drink the bottle of bleach.
After several unsuccessful attempts to get rid of the stranger, the fivesome suspect a sixth classmate–Val Rommel (Courtney Halverson), whom they all despise—is pranking them. Accordingly, they invite Val to their chat. Without warning, Jess's Facebook is updated with photos of Val drinking and smoking at a party. As Val loses her temper, Jess proclaims her innocence while struggling to delete the photos, which suddenly reappear on Adam's account. After repeated threats from Billie, Val calls 911 to report online abuse and then signs off.
After Ken briefly gets the account out of the chat, Adam tries to call the police, but is met by a voice telling him to not hang up. Laura resurfaces as a camera view that is revealed to be in Ken's room. Ken is seen being attacked by an unseen force, then shredding his hand in an active blender, before killing himself by breaking the blender then using the blades to slice his throat.
The fivesome discover that "billie227" was Laura Barns' Instagram account. Blaire is sent a link that reveals a photo of Laura messaging Val for her to remove the humiliating video and asking for friendship, and Val rejecting her, telling her to kill herself. Multiple Instagram users then slander Val, who is suddenly brought back into the chat, sitting motionless in her bathroom next to an open bottle of bleach. Initially thinking her camera is frozen, they discover that Val is in fact paralysed in some way as her phone is seen vibrating when Blaire attempts to call her. Val then crashes to the floor as the police arrive. At first, the friends believe she just experienced a seizure, but thereafter, based on the codes that the policemen relay to their colleagues, they deduce that Val committed suicide, most likely by being forced to drink the bleach.
Laura forces the four remaining friends to play Never Have I Ever, threatening to end the loser's life. Through this game, she reveals dark secrets that put the friends at odds with each other. Adam becomes enraged and uses the game to force Blaire to reveal that she is no longer a virgin, having had sex with him twice. Mitch retaliates by forcing Adam to reveal that he gave a girl roofies at a party, had sex with her while she was unconscious and then forced her to get an abortion when he found out that she was pregnant. Blaire and Adam then receive messages from their printer, but refuse to reveal what their messages say. Mitch, angry that Blaire and Adam are apparently sending "secret messages", threatens to log off, to which Laura responds that if he does, he will die. Eventually, Blaire shows her note: "If you reveal this note, Adam will die." Adam immediately shoots himself in the face as his screen shows his note: "If you reveal this note, Blaire will die."
Ken finally gets Billie out of their chat using anti-virus software. When Adam tries to call the police, he is warned by a mysterious voice against hanging up. Billie resurfaces with a camera view from across Ken's room. Ken walks over to have a look and freezes in horror. His webcam momentarily disconnects, and then reconnects to show him being thrown about by an unseen force and mangling his hand in a blender, before using the blades to slice his own throat, thus killing himself. Billie then displays the video that caused Laura's eventual suicide; dubbed "Leaky Laura", it shows a drunk Laura face-down on the ground near her house, barely conscious, sprawled in her menstrual blood and excrement.
Laura demands to know who defaced her grave. After Jess refuses to admit she was the one who vandalized it, Laura turns all the lights off in her house. As Jess hides in her bathroom, Blaire goes on Chatroulette and successfully gets someone to call the police. Suddenly, Jess' video feed disconnects and for a few seconds, she is seen screaming at an unseen force that is seemingly possessing her. Seconds after, she is shown choking to death on an electric hair straightener, that was activated. Blaire receives a Facebook notification from Jess's account and it is an image of Jess during her death, immortalised into an Internet meme by Laura.
Billie forces Adam, Blaire, Mitch, and Jess to play Never Have I Ever, stating that the loser of the game will die. All four friends are forced to reveal dark secrets which put them at odds with each other: Jess spread rumors that Blaire had an eating disorder, Blaire got drunk and crashed Jess's mother's car, Mitch kissed Laura soon before her death and reported Adam to the police for selling weed, Jess stole $800 from Adam, and Adam offered to trade Jess' life for his own. Soon after it is also revealed that Blaire had sex with Adam behind Mitch's back on two occasions and Adam forced their classmate Ashley Dane to get an abortion after he date raped her using roofies at a party.
3， Alison 堂哥jason表示过房内的Arial照片不是他拍的，而是Alison拍的。表明alison 和 arial 之间有怎么着秘密。
Laura then demands to know who uploaded the video of her. After Laura privately messages Blaire on Facebook, asking who posted the video, Blaire admits that it was Mitch who uploaded it. Mitch suddenly dies when he stabs himself in the eye, leaving Blaire alone in the chat room.
Blaire and Adam suddenly receive secret messages from their printers. Worried that they are still lying behind his back, Mitch furiously demands that Blaire reveal her note to him and threatens to leave if she doesn't. Billie assures Blaire that if Mitch leaves, he will die. In a moment of panic and high stress, Blaire shows her message: "If you reveal this note, Adam will die." Adam suddenly kills himself by shooting himself in the face; as he collapses, his camera reveals his note: "If you reveal this note, Blaire will die."
4，片头曲 也可能有暗指 arial 的情致，留神看呀！
As Blaire breaks down crying, Laura thanks her for her help, but tells
her that she must confess to one more thing. Blaire tries to placate
Laura by showing her past photos of when the two were friends. Laura
uploads the humiliating video of her on Blaire's Facebook account, but
in this version, Blaire is revealed to be the cameraman who is laughing
at Laura's misfortune. The video is flooded with hate comments blaming
Blaire for Laura's death. Blaire, in a state of shock, sits silently
just as billie227 signs off followed by her bedroom door creaking open.
Silhouetted hands appear out of nowhere and they suddenly close Blaire's
laptop (as the film switches to a first-person view). Laura's vengeful
ghost suddenly appears as Blaire unleashes one final scream.
That is What Happened....,4 Star,
Billie then asks which of the threesome defaced Laura's grave. When Blaire warns Jess against answering said question, Billie turns off all the lights in her house. Jess hides in her bathroom, while Blaire goes on Chatroulette and gets someone to call the police. Suddenly, the video feed disconnects after Jess is seen screaming and being thrown around the room by an unseen entity. Soon after, Blaire receives a Facebook notification from Jess's account. A video of Jess being fatally choked with her own electric hair-straightener appears, and is then uploaded as an Image macro, with the caption being "looks like she finally stfu".